by Radar Staff
Maria Shriver walked off some stress Saturday, hiking in Malibu.
Maria was joined by her ever-present pooch, plus son Christopher and daughter Katherine for a leisurely hike through Corral Canyon Park.
At the same time, Shriver's estranged husband Arnold Schwarzenegger and their son Patrick were having lunch together in Beverly Hills.
As RadarOnline.com has reported, both Maria and Arnold have retained high-powered lawyers, and it's believed they are quietly working out all the details of their property settlement prior to Shriver filing for divorce.